1/*
 2 * This file is subject to the terms and conditions of the GNU General Public
 3 * License.  See the file "COPYING" in the main directory of this archive
 4 * for more details.
 5 *
 6 * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
 7 *
 8 * Copyright (C) 2009 Lemote, Inc.
 9 * Author: Yan hua (yanhua@lemote.com)
10 * Author: Wu Zhangjin (wuzhangjin@gmail.com)
11 */
12
13#include <linux/io.h>
14#include <linux/init.h>
15#include <linux/serial_8250.h>
16
17#include <asm/bootinfo.h>
18
19#include <loongson.h>
20#include <machine.h>
21
22#define PORT(int)			\
23{								\
24	.irq		= int,					\
25	.uartclk	= 1843200,				\
26	.iotype		= UPIO_PORT,				\
27	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,	\
28	.regshift	= 0,					\
29}
30
31#define PORT_M(int)				\
32{								\
33	.irq		= MIPS_CPU_IRQ_BASE + (int),		\
34	.uartclk	= 3686400,				\
35	.iotype		= UPIO_MEM,				\
36	.membase	= (void __iomem *)NULL,			\
37	.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,	\
38	.regshift	= 0,					\
39}
40
41static struct plat_serial8250_port uart8250_data[][2] = {
42	[MACH_LOONGSON_UNKNOWN]         {},
43	[MACH_LEMOTE_FL2E]              {PORT(4), {} },
44	[MACH_LEMOTE_FL2F]              {PORT(3), {} },
45	[MACH_LEMOTE_ML2F7]             {PORT_M(3), {} },
46	[MACH_LEMOTE_YL2F89]            {PORT_M(3), {} },
47	[MACH_DEXXON_GDIUM2F10]         {PORT_M(3), {} },
48	[MACH_LEMOTE_NAS]               {PORT_M(3), {} },
49	[MACH_LEMOTE_LL2F]              {PORT(3), {} },
50	[MACH_LOONGSON_END]             {},
51};
52
53static struct platform_device uart8250_device = {
54	.name = "serial8250",
55	.id = PLAT8250_DEV_PLATFORM,
56};
57
58static int __init serial_init(void)
59{
60	unsigned char iotype;
61
62	iotype = uart8250_data[mips_machtype][0].iotype;
63
64	if (UPIO_MEM == iotype)
65		uart8250_data[mips_machtype][0].membase =
66			(void __iomem *)_loongson_uart_base;
67	else if (UPIO_PORT == iotype)
68		uart8250_data[mips_machtype][0].iobase =
69		    loongson_uart_base - LOONGSON_PCIIO_BASE;
70
71	uart8250_device.dev.platform_data = uart8250_data[mips_machtype];
72
73	return platform_device_register(&uart8250_device);
74}
75
76device_initcall(serial_init);